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Nanocrystalline Chalcopyrite Materials (CuInS2 and CuInSe2) via Low-Temperature Pyrolysis of Molecular Single-Source Precursors (March 18, 2003)

Author: Castro, Stephanie L.; Bailey, Sheila G.; Raffaelle, Ryne P.; Banger, Kulbinder K.; Hepp, Aloysius F
Subject: COMPUTER INFORMATION SECURITY; ACCESS CONTROL; DEPLOYMENT; DOMAINS
Year: 2003
Language: English
Book contributor: NASA
Collection: nasa_techdocs

Description

Nanometer sized particles of the chalcopyrite compounds CuInS2 and CuInSe2 were synthesized by thermal decomposition of molecular single-source precursors (PPh3)2CuIn(SEt)4 and (PPh3)2CuIn(SePh)4, respectively, in the non-coordinating solvent dioctyl phthalate at temperatures between 200 and 300 C. The nanoparticles range in size from 3 - 30 nm and are aggregated to form roughly spherical clusters of about 500 nm in diameter. X-ray diffraction of the nanoparticle powders shows greatly broadened lines indicative of very small particle sizes, which is confirmed by TEM. Peaks present in the XRD can be indexed to reference patterns for the respective chalcopyrite compounds. Optical spectroscopy and elemental analysis by energy dispersive spectroscopy support the identification of the nanoparticles as chalcopyrites.

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Identifier:	nasa_techdoc_20030112830
Document-source:	CASI
Documentid:	20030112830
Nasa-center:	Glenn Research Center
Online-source:	http://wayback.archive-it.org/1792/20100127202607/http://hdl.handle.net/2060/20030112830
Original-nasa-rights:	Unclassified; Copyright (Distribution as joint owner in the copyright) ; Unlimited; Publicly available;
Updated-added-to-ntrs:	2009-07-29
Licenseurl:	http://creativecommons.org/licenses/publicdomain/
Mediatype:	texts
Rights:	Public Domain
Identifier-access:	http://www.archive.org/details/nasa_techdoc_20030112830
Identifier-ark:	ark:/13960/t0ft9ft71
Ppi:	300
Ocr:	ABBYY FineReader 8.0